Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


pretty bad
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
7,540 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2010 Audi S4 engine problems

engine problem

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2010 Audi S4 Owner Comments

problem #5

Jan 122011


  • 13,000 miles


2010 Audi S4 in the san fran bay area, after a weekend drive to the snow, found a pool of coolant under car and just med it to the dealer before warning light came on. Dealer told me it was common. No recall to be expected, isn't this illegal? I make pharmaceuticals and if I don't perform a recall this is an illegal action.

- Oakland, CA, USA

problem #4

Oct 312010


  • 12,000 miles
My car leaked a large amount of coolant noticed after it had been parked. I managed to drive it to dealer where the water pump was replaced under warranty. I was told that the plastic seal on the pump has failed with other customers and was replaced with a new metal seal.

- Toronto, 00, USA

problem #3

Oct 162010

S4 6-cyl

  • 6,900 miles
2010 Audi S4 water pump failure.

- Virginia Beach, VA, USA

problem #2

Aug 072010


  • 5,800 miles
2010 Audi S4 water pump failure -- this complaint is identical to the previous two complaints surrounding this model's water pump failure. It should be noted that a near full loss of steering directly related to this failure occurred at the same time. In my case the car has been repaired, however like others who have detailed their experiences, Audi has not acknowledged this is a systemic issue for this model, nor is the repair satisfactory as the distinct odor of G-12 (G-30 in europe) is present. Though this is a safety issue first, it is also a consumer protection matter as the both the dealer and Audi of America who I have been in communications with has not been clear about this issue.

- Hollywood, FL, USA

problem #1

Aug 302010


  • miles
This has been a known issue to many 2010 Audi S4 owners. Many of them reported a waterpump failure basically under any circumstances, I.e., highway driving, cornering, and low speed driving. 2010 Audi S4 produced in 2009 clearly have a defective water pump, which tend to mostly fail prior to 10K miles on the car. Many S4 owners and forum members reported many kinds of hazard that this failure can bring, including coolant spilling that can potentially harm the surrounding motorists (slippery surface caused by oily coolant) and the loss of power steering which can be extremely dangerous on highway. My water pump has not failed yet, but from the failure ratio shown on a Audi S4 owner forum, it can be clearly seen that most of these water pumps will eventually fail at any mileage. I am seriously worried about endangering others, myself, or my family members because of this potential failure on the water pump of 2009-produced 2010 S4. I would appreciate your concern over this issue.

- Lawrence, KS, USA

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